[5][6] Because her mother was Jewish, Bosmans was under the scrutiny of authorities during the German occupation, and by 1942 she could no longer perform on public stages in the Netherlands.

Unable to work as a musician, and needing to care for her mother through wartime famine and other dangers, Bosmans focused again on composing.

[1] One of her songs, Daar komen de Canadezen ("Here come the Canadians") "became an anthem of liberation" as the war ended and Allied soldiers arrived in the Netherlands.

[10] In 2017, Dutch-Canadian singer Pauline van der Roest gave a concert of works by Bosmans, in Ottawa.

[7] In 2020, North American musicians Leah Plave and Dan Sato made a new recording of the complete works of Bosmans for cello and piano.